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2 Sheets-Sheet 1.

(NoMoael.)

B1 GHAMBERLAIN WINDMILL.

No. 284,945. Patented Sept. 11, 1883.

(No Model.) 2 Sheets--Sheet 2.

B. CHAMBERLAIN WINDMILL.

No. 284,945. Patented Septl l1, 1883.

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' /mf/Laxfru @fw/m@ l UNITED STAT-Es PATENT FFICE@ BLANCHARD OHAMBERLAIN, OF BELLEFONTAINE, OHIO, ASSIGNOR OF SIX- EIGHTHS TO ROBERT LAMB, JOSEPH H. VILSON, HARRY E. PALMER, AND f, GEORGE H. PALMER, ALL OF SAME PLACE.

WINDMILL.

SPECIFICATION forming part of Letters Patent No. 284,945, dated September 11, 1883.

Application filed November 11, 1882. (No model.)

To @ZZ whom it may concern:

Be it known that I, BLANCHARD CHAMBER- LAIN, a citizen of the United States, and residing at Bellefontaine, county of Logan, and State of Ohio, have invented a new and useful Improvement in Vindmills, of which the following is a specification.

My invention relates to the class of windmills which are constructed with pivoted 1o blades adapted to be feathered or turned edgewise in order to graduate the effective surfaces relative to the force of the wind and the power required for the work to be performed, the pivoted blades being connected by I 5 cranks to a i'eathering-rod extending` through the hollow shaft of the wheel, and connected to a vertical governor-shaft having a vane at its upper end, so that the force applied by a counter-weight or spring to hold the blades 2o broadside to the wind will be counteracted and regulated 'in proportion to the pressure by the action of the wind on said vane.

My improvement consists in adopting in the place and stead of a single vertical governor-rod and its vane double governor-rods and their corresponding vanes, the lower portions of the governor-rods being provided with I segment-arms which gear in a transverse double rack on the feathering-rod.

My improvement consists, further, in placing a spring below the termination of the pumprod, which, with its connections, by means of a chain and vanes upon the governor-rods, regulate the area of blade-surface exposed to the wind, said spring being attached to a lever, which', in turn, is held in position by means oi' a suitable post and pins, this latter device being used to increase or decrease the tension of the spring.

I employ a slide and crank motion for transmitting the rotary movement ot' the windwheel shaft to a vertically-reciprocating movement of the pump-rod by means of a crank placed upon the wheel-shaft, and its wrist-pin, 4 5 which turns in a slide, and a frame, which latter is attached to the pump-rod at its lower end. Guide-straps extend from the upper edge of the frame of the slide through square perforations in the top of thehousing.

I also provide the pump-rod at its lower end with a 5o swivel and suitable lock-nuts, which join said pump-rod with the pump-plunger, thus allow! ing the pump-rod to rotate slightly, by reason of the turning of the housing, without bending the pump-plunger.

My improvement consists, further, in constructing the bed-plate, ,which is situated on the top of the derrick, with a socket at its center, into which is fitted a boss cast upon the bottoni portion of the housing, and serves as 6o a bearing for the same. vThe said housing has attached to its center a wrought-iron pipe,

f which passes down through the center of the boss, and is embraced by the annular sides of the same. the bed-plate an annular stem extends downwardly, provided with flanges at its upper and lower ends, which embrace the wrought-iron pipe, and serve to steady and strengthen the connection between the housingV and the bed- 7o plate.

In order that my invention may be fully understood, I will proceed to describe it withv reference to the accompanying drawings, in which- Figure l is a vertical section of a windmill embodying my improvements. Fig. 2 is a front elevation. Fig. 3 is a plan. Fig. 4 is a detail view of the slide and crank mechanism for operating the pump-rod.

A The derrick Orpedestal'of the mill is shown at 1, upon the top of which `is bolted, by means of bolts 2 2, the bed-plate 8. i

4 is the housing or turn-table, upon the lower portion of which is attached the boss 5, which iits into and turns within the bed-plate socket 6. At the lower portion of the socket 6, and extending downwardly, is shown an annular stem, 7, provided with flanges S 9 at its upper 'and lower ends, which latter embrace the pipe 9o 10. The wheel-shaft is shown at 11, to which is attached the crank 12, its wrist-pin 13 being placed in a horizontal slot, 14, ofthe slidey frame 15 on the hollow pump-rod 15, which is provided at its lower end with a swivel, 16, '9 5 and lock-nuts 17 1S., the said swivel being secured to the pump-plunger 19.

20 20 are guides placed upon the top of the From the bottom of the socket in 6 5 ernor-shafts 22 22 near their mid-lengths, and

is attached to the spring 33, which, in turn, is

attached-to the lever 34, which latter is secured by means of the posts` and pin 36.

Although it is preferred to employ a reciprocating motion of the pump-rod, the mill is adapted to be very cheaply converted into a rotary movement.

By the application of pressure by means of the spring 33 to the chain 31 and rod 32, the vanes 24 24 will be drawn broadside to the wind until they overcome the pressure of the spring 33, the wheel-blades being turned flatwise to the wind to a corresponding degree. It will thus appear that an increase of pressure of wind, by delecting the governor-vanes 24 24 in opposition to the pressure of spring 33, tends to turn the wheel-blades edgewise to the wind, whereas a reduced pressure of the wind, permitting the vanes 24 24 to be drawn around by the action of the spring 33, will present a greater surface to the wheelblades, thus regulating the pressure as required under control. of an adjustment or variation of pressure in the spring 33 by means of 'a lever, 34.

' Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

1. The combination of the governorvshafts 22, having vanes 24 24 and segment-arms 27 27, with the feathering-rod 29, having double rack 28, and mechanism, substantially as described, for throwing the vanes 24 24 back into the wind, substantially as and for the .purpose set forth.

2. In a windmill, the combination of a bedplate provided with a socket having a downwardly-extending annular stem, said stem having iianges at its upper and lower ends, for the 'purposes described, and a superimposed housing or turn-table provided with a boss adapted to turn in the socket of the bed-plate, substantially as described.

3. In a windmill, the combination of a hollow wheel-shaft provided with a crank having a wrist-pin adapted to move in a horizontal slot of a sliding frame, substantially as shown, the said sliding frame being adapted to move in guides in the housing-frame above, and provided with a hollow pump-rod with swivel and lock-nuts for securing a pumpplunger below, lall substantially as and for the purposes set forth.

4. The combination of the governor-shaits 22 22, chain 31, rod 32, and spring 33, situated at the base of the rod 32, and provided with mechanism, substantially as described,

vfor regulating the tension of the chain, as set forth.

5. The combination of the governor-shafts 22 22, chain 31, rod 32, and spring 33, situated atthe base thereof, and adapted to exert a strain of tension on the said chain.

BLANCHARD CHAMBERL AIN.

XVitiiesses:

OcrAviUs KNIGHT, VALTER ALLEN. 

